Tube-number record
10C8
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BrandGeneral Electric
ClassTriode-Pentode
BaseNoval (B9A)
Filament10.5 V @ 0.3 mA
Construction
Primary TypeMulti-section
EnvelopeT-6 1/2
Base MaterialGlass
Sections2
Filament / Heater
Heater NotesControlled heater warm-up characteristic for series-string receivers
Absolute Maximum Ratings
Plate Voltage300 V
Plate Dissipation2.5 W
Grid 2 Voltage300 V
Cathode Current18 mA
H-C Voltage200 V
Audio Performance
Key Features
- Series-string television receivers
- Controlled heater warm-up
- Low power requirements
- Miniature size
Typical Operation
| Mode | Plate V | Gm (µmhos) | Rp (Ω) | µ | Plate mA |
|---|---|---|---|---|---|
| Pentode Section | 135 V | 8000 | 190000 | — | 11.5 mA |
| Triode Section | 250 V | 4400 | 12000 | 53 | 7.3 mA |
| Pentode Section (Triode-Connected) | 135 V | — | — | — | 33 mA |
Application Notes
The pentode section may be used as a general-purpose amplifier or vertical-deflection amplifier. The high-mu triode is suitable as a vertical oscillator, AF amplifier, or sync separator.
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